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  1. 16 2月, 2010 1 次提交
  3. 28 1月, 2010 1 次提交
    • J
      ALSA: pcm_native - fix runtime->boundary calculation · 7910b4a1
      由 Jaroslav Kysela 提交于 
      The code in pcm_lib updating runtime->hw_ptr_interrupt expects
that runtime->boundary is divisible with runtime->period_size.
Thanks are going to Clemens Ladisch for the notice.

Fix the runtime->boundary calculation using buffer_size * period_size
as base and find a least common multiple for 32bit platforms when
the expression might overflow.
Signed-off-by: NJaroslav Kysela <perex@perex.cz>
      7910b4a1
  5. 27 1月, 2010 1 次提交
    • J
      ALSA: pcm_lib - return back hw_ptr_interrupt · e7636925
      由 Jaroslav Kysela 提交于 
      Clemens Ladisch noted for hw_ptr_removal in "cleanup & merge hw_ptr
update functions" commit:

"It is possible for the status/delay ioctls to be called when the sound
card's pointer register alreay shows a position at the beginning of the
new period, but immediately before the interrupt is actually executed.
(This happens regularly on a SMP machine with mplayer.)  When that
happens, the code thinks that the position must be at least one period
ahead of the current position and drops an entire buffer of data."

Return back the hw_ptr_interrupt variable. The last interrupt pointer
is always computed from the latest hw_ptr instead of tracking it
separately (in this case all hw_ptr checks and modifications might
influence also hw_ptr_interrupt and it is difficult to keep it
consistent).
Signed-off-by: NJaroslav Kysela <perex@perex.cz>
      e7636925
  7. 21 1月, 2010 1 次提交
  9. 18 1月, 2010 2 次提交
  11. 07 1月, 2010 2 次提交
  13. 25 12月, 2009 1 次提交
  15. 27 11月, 2009 2 次提交
    • T
      ALSA: pcm - fix page conversion on non-coherent PPC arch · 6985c887
      由 Takashi Iwai 提交于 
      The non-cohernet PPC arch doesn't give the correct address by a simple
virt_to_page() for pages allocated via dma_alloc_coherent().
This patch adds a hack to fix the conversion similarly like MIPS.

Note that this doesn't fix perfectly: the pages should be marked with
proper pgprot value.  This will be done in a future implementation like
the conversion to dma_mmap_coherent().
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      6985c887
    • T
      ALSA: pcm - fix page conversion on non-coherent MIPS arch · 66b6cfac
      由 Takashi Iwai 提交于 
      The non-coherent MIPS arch doesn't give the correct address by a simple
virt_to_page() for pages allocated via dma_alloc_coherent().

Original patch by Wu Zhangjin <wuzj@lemote.com>.
[Ralf mentioned: "The origins of this patch go back far further.
 The oldest patch I could find which is a superset of this was written
 by Atsushi Nemoto and various incarnations of it have been sumitted
 to and reject by me a number of times through the years."]
A proper check of the buffer allocation type was added to avoid the
wrong conversion.

Note that this doesn't fix perfectly: the pages should be marked with
proper pgprot value.  This will be done in a future implementation like
the conversion to dma_mmap_coherent().
Acked-by: NRalf Baechle <ralf@linux-mips.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      66b6cfac
  17. 26 11月, 2009 2 次提交
  19. 28 9月, 2009 1 次提交
  21. 21 9月, 2009 1 次提交
  23. 20 8月, 2009 1 次提交
    • T
      ALSA: pcm - Fix drain behavior in non-blocking mode · 4cdc115f
      由 Takashi Iwai 提交于 
      The current PCM core has the following problems regarding PCM draining
in non-blocking mode:

- the current f_flags isn't checked in snd_pcm_drain(), thus changing
  the mode dynamically via snd_pcm_nonblock() after open doesn't work.
- calling drain in non-blocking mode just return -EAGAIN error, but
  doesn't provide any way to sync with draining.

This patch fixes these issues.
- check file->f_flags in snd_pcm_drain() properly
- when O_NONBLOCK is set, PCM core sets the stream(s) to DRAIN state
  but quits ioctl immediately without waiting the whole drain; the
  caller can sync the drain manually via poll()
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      4cdc115f
  25. 03 8月, 2009 1 次提交
    • L
      ALSA: pcm - Tell user that stream to be rewound is suspended · 51840409
      由 Lubomir Rintel 提交于 
      Return STRPIPE instead of EBADF when userspace attempts to rewind
of forward a stream that was suspended in meanwhile, so that it
can be recovered by snd_pcm_recover().

This was causing Pulseaudio to unload the ALSA sink module under a race
condition when it attempted to rewind the stream right after resume from
suspend, before writing to the stream which would cause it to revive the
stream otherwise. Tested to work with Pulseaudio patched to attempt to
snd_pcm_recover() upon receiving an error from snd_pcm_rewind().
Signed-off-by: NLubomir Rintel <lkundrak@v3.sk>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      51840409
  27. 22 6月, 2009 1 次提交
  29. 29 5月, 2009 1 次提交
  31. 27 5月, 2009 1 次提交
    • T
      ALSA: Fix invalid jiffies check after pause · 6af3fb72
      由 Takashi Iwai 提交于 
      The hw_ptr_jiffies has to be reset properly to avoid the invalid
check of jiffies delta in snd_pcm_update_hw_ptr*() functions.
Especailly this patch fixes the bogus jiffies check after the puase
and resume.

This patch is a modified version of the original patch by Jaroslav.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      6af3fb72
  33. 05 5月, 2009 1 次提交
  35. 14 4月, 2009 1 次提交
  37. 16 3月, 2009 1 次提交
    • J
      Rationalize fasync return values · 60aa4924
      由 Jonathan Corbet 提交于 
      Most fasync implementations do something like:

     return fasync_helper(...);

But fasync_helper() will return a positive value at times - a feature used
in at least one place.  Thus, a number of other drivers do:

     err = fasync_helper(...);
     if (err < 0)
             return err;
     return 0;

In the interests of consistency and more concise code, it makes sense to
map positive return values onto zero where ->fasync() is called.

Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>
      60aa4924
  39. 05 2月, 2009 1 次提交
  41. 02 11月, 2008 1 次提交
    • A
      saner FASYNC handling on file close · 233e70f4
      由 Al Viro 提交于 
      As it is, all instances of ->release() for files that have ->fasync()
need to remember to evict file from fasync lists; forgetting that
creates a hole and we actually have a bunch that *does* forget.

So let's keep our lives simple - let __fput() check FASYNC in
file->f_flags and call ->fasync() there if it's been set.  And lose that
crap in ->release() instances - leaving it there is still valid, but we
don't have to bother anymore.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      233e70f4
  43. 16 10月, 2008 1 次提交
  45. 25 9月, 2008 1 次提交
  47. 04 9月, 2008 1 次提交
  49. 13 8月, 2008 1 次提交
  51. 07 8月, 2008 2 次提交
    • L
      Revert "pcm_native.c: remove unused label" · 685d87f7
      由 Linus Torvalds 提交于 
      This reverts commit 680db013.  The label
is actually used, but hidden behind CONFIG_SND_DEBUG and the horrible
snd_assert() macro.

That macro could probably be improved to be along the lines of

	#define snd_assert(expr, args...) do { if ((void)(expr),0) { args; } } while (0)

or similar to make sure that we always both evaluate 'expr' and parse
'args', but while gcc should optimize it all away, I'm too lazy to
really verify that.  So I'll just admit defeat and will continue to live
with the annoying warning.
Noted-by: NRobert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Linus "Grr.." Torvalds
      685d87f7
    • L
      pcm_native.c: remove unused label · 680db013
      由 Linus Torvalds 提交于 
      This fixes the warning

  sound/core/pcm_native.c: In function 'snd_pcm_fasync':
  sound/core/pcm_native.c:3262: warning: label 'out' defined but not used
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      680db013
  53. 03 7月, 2008 1 次提交
  55. 06 2月, 2008 1 次提交
  57. 01 2月, 2008 7 次提交